News

Solid State Devices, Inc. (SSDI) is proud to release the SFU290 and SFU291 N-Channel JFETS to replace Vishay Siliconix’s U290 / U291 series. The SFU290 and SFU291 deliver very fast switching speed with a maximum turn-on time of 15 nsec. These 30 volt devices also provide low on-state resistance at 3 Ω. These features will benefit applications such as low on-resistance analog / digital switches, choppers, sample-and-hold, normally “on” switches, and current limiters.

SSDI specializes in providing optimal die / package combinations to best meet its customers’ requirements. So, in addition to manufacturing the 0.35 W drop-in replacement in a TO-52 package, SSDI’s engineers developed a new 4 W surface mount option in the SMD.22 package for applications requiring high power dissipation. The SMD.22 also offers a much lower maximum thermal resistance of 30°C/W as opposed to 357°C/W for the TO-52 package.

When programs encounter end-of-life or obsolescence issues, SSDI can provide a variety of hermetic product options, which may include high density packaging, improved performance, and higher reliability. Whether the situation calls for a drop-in replacement or a new solution, SSDI’s strong die foundry relationships and in-house engineering / manufacturing capabilities allow it to effectively accommodate the specific needs of individual applications.

Refer to data sheet for ratings and case outlines

FEATURES

• Very Low ON Resistance
• Very Fast Switching Speed
• No Forward Recovery
• Available in Hermetically Sealed, Surface Mount Power Package (SMD.22) for Applications Requiring High Power Dissipation Up to 4 W
• High Off-Isolation
• Low Capacitance:
  C_RSS = 30 pF max
• Low Insertion Loss
• Replacement for Vishay Siliconix U290 & U291
• TX, TXV, and S Level Screening Available - Based on MIL-PRF-19500, Screening Flows Available on Request

APPLICATIONS

• Low On Resistance Analog / Digital Switches
• Choppers
• Sample-and-Hold
• Normally "On" Switches
• Current Limiters